Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 18 to 75

Comparing two treatments for heart attack patients with high thrombus burden

Official title: Effects of Intracoronary Recombinant Human TNK Tissue-type Plasminogen Activator Versus Tirofiban on Myocardial Perfusion and Clinical Prognosis in Patients With ST-segment Elevation Myocardial Infarction and High Thrombus Burden: a Multicenter, Randomized, Controlled, Single-blind, Non-inferior Study

Run by Henan Institute of Cardiovascular Epidemiology · NCT06769256 · Data updated 2026-11-12

This study is testing if a new treatment for heart attack patients with a lot of blood clots works as well as an existing treatment and whether it causes more bleeding.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment300 (estimated)
SponsorHenan Institute of Cardiovascular Epidemiology
Academic / other
Locations1 site (Zhengzhou, Henan)
StatusRecruiting
StartedJanuary 1, 2025
Main results expectedDecember 30, 2027
Study endsDecember 30, 2027
Registry record updatedMay 22, 2026
Trial IDNCT06769256 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18-75 who have experienced STEMI within 12 hours and have a high thrombus burden.

Probably not a fit

Patients with severe comorbidities or contraindications to the treatments being tested may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to evaluate the effectiveness and safety of intracoronary rhTNK-tPA compared to Tirofiban in patients experiencing ST-segment elevation myocardial infarction (STEMI) with a high thrombus burden. The study will enroll 300 participants who will be randomly assigned to receive either treatment. The primary outcome will be assessed through the corrected TIMI frame count after percutaneous coronary intervention (PCI), while major adverse events will be monitored over a one-year follow-up period. The trial seeks to determine if rhTNK-tPA is as effective as Tirofiban and whether it leads to a higher incidence of bleeding events.

Why it matters

Potential benefit: If successful, this study could provide a more effective treatment option for patients with STEMI and high thrombus burden, potentially improving outcomes and reducing complications.

How similar studies have gone: Previous studies have explored similar treatment comparisons in STEMI patients, but the specific use of rhTNK-tPA in this context is less common, making this approach somewhat novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18-75 years old;
* STEMI within 12 hours of onset;
* TIMI flow grade 0-2 or TIMI thrombus grade ≥4 after thrombus aspiration or balloon dilation
* Radial artery access

Exclusion Criteria:

* A functional coronary collateral supply (Rentrop grade≥2) to the infarctrelated artery
* Known or suspected old myocardial infarction of target vessels
* Rescue PCI
* Cardiogenic shock
* Contraindications to Tirofiban or rhTNK-tPA
* Severe hepatic and renal insufficiency (alanine aminotransferase ≥5 upper limit of normal; estimated glomerular filtration rate \<30ml/min/1.73m2, or on dialysis)
* Prolonged (\> 10 minutes) cardiopulmonary resuscitation
* Definite mechanical complications (including ventricular septal perforation, or rupture of the Papillary tendon bundle, or rupture of the left ventricular free wall)
* Severe chronic obstructive pulmonary disease or respiratory failure
* Severe infection
* Neurological disorders
* Malignant tumors or other pathophysiological conditions with an expected survival time of less than 1 year
* Pregnant or lactating women

Where it's running

  • Fuwai Central China Cardiovascular Hospital
    Zhengzhou, Henan, China
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.